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介绍一种利用单片机实现信号倍频，对周期信号进行整周期采样的方法，并且给出了该方法在转子动平衡测试中的具体应用。利用本方法构成的倍频电路具有硬件电路简单、倍频精度高、跟踪速度快的优点。
This paper introduces a method of using the singlechip to multiply the signal and sample the whole period of the periodic signal, and gives the concrete application of this method in the rotor dynamic balance test. The frequency doubling circuit formed by the method has the advantages of simple hardware circuit, high frequency doubling precision and fast tracking speed.